Peter rundquist



(No Model.)

P. RUNDQUIST. STEAM REGULATOR FOR HOT WATER BOILERS.

No. 489,977. Patented Nov. 4, 1890.

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By JIM/M ATTORNEYS 1: News Plfili cm, mom-mam, wumnm'on, m c.

UNITED STATES PATENT OFFICE.

PETER RUNDQUIST, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND JAMES DALY, OF SAME PLACE.

STEAM-REGULATOR FOR HOT-WATER BOILERS.

SPECIFICATION forming part of Letters Patent No. 439,977, dated November 4, 1890.

Application filed June 23,1890. Serial No. 356,368. (No model.)

To all whom it may concern.-

Be it known that I, PETER RUNDQUIST, of New York city, in the county and State of New York, have invented a new and Improved Steam-Regulator for Hot-'Water Boilers, of which the following is a full, clear, and exact description.

My invention relates to improvements in steam-regulators for that class of hot-water boilers which are heated by steamcoils, and from which the hot water is distributed. It is well known that in boilers of this class, from which hot water is constantly being drawn and cold water added, the temperature of the water constantly varies; and the object of my invention is to regulate the infiow of steam to the boiler in such a manner that the water will be kept at a practically even temperature.

To this end my invention consists in the construction and arrangement of parts hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a boiler provided with my invention with the ends of the tube and with a portion of the connections in vertical section. Fig. 2 is a broken detail view, in elevation, showing one end of the boiler and the connections between the lever and the valve-crank of the steam-supply pipe. Fig. 3 is a plan view of the boiler and connections, and Fig. 4 is a detail plan of the plate that is mounted on one end of the boiler-tube.

In the accompanying drawings I have shown my invention applied to a vertical boiler; but it may be applied to'a horizontal boiler as well.

The boiler A is mounted on suitable supports, and is provided with a suitable steaminlet pipe B in the usual manner, the steampipe having a valve 0 therein, to the valvestem of which is fixed a crank c. A tube D extends longitudinally through the boiler and projects slightly from each end thereof, said tube having its projecting ends D screw-.

threaded, as shown in Fig. 1. A rod E, preferably of zinc, is mounted loosely in the tube D and projects slightly from each end thereof.

The lower end of the rod E has a cap E fixed thereto, said cap being internally screwthreaded that it may be screwed on the lower end of the tube D. The upper end of the rod E is provided with a hardened point E adapted to engage and operate the lever mechanism, as described below.

A plate F is placed upon the upper end of the tube D, said plate having a central oblong opening F therein, adapted to enclrcle the tube and to allow the plate to be ad usted thereon. The plate F is held in placeby a washer f between the plate and the boller and by a suitable nut f, which is screwed onto the outer end of the tube.

The plate F has at one end the vertlcal ears F between which is pivoted the lever G, and

has at its opposite end and in alignment with the ears a vertical slotted guide F through which the lever extends. The lever G is pivoted between the ears F as shown,- extends horizontally through the guide F is bent upwardly at g to give the necessary distance between the free end of the lever and the valve in the steam-pipe, and is provided at its free end with a series of perforations g to permit of an adjustable connection between the lever and the rod for operating the valve. The ears F and the guide F should align with the rod E, so as to bring the lever directly above the end of the rod.

A sliding frame H is mounted upon the lever G directly above the end of the rod E, and is held in position by suitable screws h, said frame having upon its lower side a notch 71. to receive the pointed end of the rod E. The lever G is normally pressed downward, so as to hold the frame H and rod E in engagement by the spiral spring 1', one end of which is fixed to the lever and the other to an eye on the plate F. A stirrup j is pivoted to the free end of the lever G, and a similar stirrup is pivoted to the crank c of the stem of the valve 0. The stirrups j have each an aperture in their cross-bar, which apertures are reversely threaded to receive the reversely-threaded ends of a connecting-rod is, so that by turning the rod to the right or left the dis- From the foregoing description it will be seen that the position of the plate E on the tube D may be changed, thereby changing the fulcrum of the lever G. It will also be seen that a slight expansion or contraction of the rod E will quickly affect the lever G, and as the rod E engages the lever near the point at which it is pivoted a slight movement of the rod will cause a much greater movement in the free end of the lever.

The device operates as follows: The rod E, being made of zinc, is very sensitive to changes in temperature, and when it expands under the influence of heat it acts upon the frame H and lever G, thereby raising the lever and partially closing the valve 0. Whenthe rod E contracts, the spring 2' will depress the lever and by means of the connection between the lever and the crank of the valve will open the valve. It will thus be seen thatifa constant supply of steam is maintained the temperature of the boiler may be kept practically even. The distance which the rod E projects above the tube D may be regulated by manipulating the cap E.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with the boiler or reservoir and its valved steam-pipe, of a tube extending through both ends of the boiler, a screw-cap on one end of the, tube and a nut on the other, an expansible rod projecting at its upper or outer end beyond that end of the tube, a screw passing through said cap into the lower or inner end of said rod, and a lever crossing the upper or outer end of the rod and connected with the valve of the steam-pipe, substantially as described.

2. The combination,with the boiler or reservoir and its valved steam-pipe, of the tube mounted in the headset the boiler-or reservoir, a slotted plate F, through which the upper or outer end of the tube projects, a nut on the tube for adjusting said plate, the expansible rod mounted in said tube, and alever pivoted to the plate and crossing the end of said rod to be operated thereby and connected at its free end with the valve of the steampipe, substantially as described.

3. The combination, with the boiler or reservoir having a valved steam-pipe, of a tube extending through and mounted in the boiler-heads, an expansible rod within the tube, a plate having a slot E through which the upper or outer end of the tube passes, a nut on the tube for securing and adjusting the said plate, a bearing F, projecting from the plate, a lever G, pivoted thereto, a frame H,

adjustable along the lever and having the adj usting-screws h,and connections between the outer end of the lever and the steam-pipe valve, substantially as described.

4. The combination, with the boiler, the tube D, the rod E, and the valved steam-pipe, of the plate F, through which the upper or outer end of the tube passes,a nut on the tube for adjusting said plate, a bearing F and guide F on the plate at opposite sides of the tube, the lever G, pivoted to the said bearing, crossing the end of rod E and passing through the guide, a spring Z, pulling the lever toward the plate, and connections between -the outer end of the lever and the steam-pipe valve, substantially as described.

PETER RUNDQUIST.

Witnesses:

WARREN B. HUTCHINSON, C. SEDGWIOK. 

